Premium
Supernormality with Cycle Length‐Dependent Intra‐His Alternans : A New Cause of Group Beating
Author(s) -
TROHMAN RICHARD G.,
PINSKI SERGIO L.
Publication year - 1997
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1997.tb06092.x
Subject(s) - medicine , procainamide , cardiology , electrical conduction system of the heart , anesthesia , electrophysiology , electrocardiography
This article describes a patient with baseline infranodal conduction disease. Following the administration of intravenous procainamide, the patient developed group beating. Careful electrophysiological evaluation revealed that the group beating was due to alternating intra‐His conduction times. Systematic analysis of paced and spontaneous events provides strong evidence that the alternans results from supernormality within the His bundle.